I only quoted the part I disagree with you. I won't waste my time to response the part I agree or cannot give a clear answer.
Here is CR. I believe most people here are Canon fans, not Sigma fans. You see many people post like "No red ring on it", "I buy only Canon", or even "I don't care how the reviews are, it's not Canon".
I assume you know how to use google search. Please search Sigma 35mm F/1.4 review, and tell me how many reviews say Sigma/Canon better. If you do believe most of the reviews, that's fine. However, I believe there must a reason most reviews give Sigma the crown. Don't even forget the price between Canon and Sigma is very different.
Actually this does not address issues raised in my post which you are not quoting...as to your reasoning "that lots of people say this is so" doesn't convince me any... rather some "group-think" is obvious and "me-too" blogs and reviews that follow the original lensrental format or even directly reference it...are not exactly "unbaised" nor always competent.
Lensrental's own blog, it must be said, is rather measured pointing out the bokeh could be a weak spot. I agree there are a couple more out there which I would believe but they are all careful to not over emphasize either the bokeh or the autofocus issues that may well emerge and rather stick to sharpness and the clear price advantage.
I had no beef about the better sharpness, but my posts (scroll back a few not just the last one) raises at least three seperate issues which none of the "Ra Ra Ra!!! reviews" address...certainly with no careful analysis or openly available data.
Only exception is lensrental blog which in fact reinforces the concern about the bokeh with graphs to boot!
By the way, do you really try to do google search about the Sigma 35mm F/1.4? Not all websites follow lensrental.com. Many websites report the bokeh and autofocus of the new Sigma 35mm F/1.4 is amazing. You can have your own opinion for the Sigma 35mm F/1.4. However, I am just telling you many(or I should say most) webistes talking about the Sigma 35mm F/1.4 believe this is the new king of the 35mm prime.
Again, except lensrentals.com, I see no hard data... Just words. my point was not to put down sigma but to raise fair issues... Sorry if I am not so easily obligated to jump on the sigma bandwagon.
In fact, at least couple of sites clearly indicate the bokeh is suboptimal including lensrental blog which was gleefully cited to support sigma's ascendancy, but conveniently ignored when it suggested shortcomings.
My own view upon viewing the gallery of pics on lensrental, the Korean site, and Flickr, is that the the sigma bokeh looks "nervous". It is not pleasing to the eye. I also can't say I like the sigma pallet of colors. Some of these issues have cropped up in comments here repeatedly and reviews as well but we all know supporters ignore anything contrary and selectively cite the possitive aspects.
Your reply again provides platitudes ... No hard evidence... The only graphs or comparisons exist in the lensrental followup blog on 35 f2.
I wish that sigma has turned the corner...at the very least sigma may have forced canon to move up its own 35mm 1.4 release... But I won't be joining the sigma choir anytime soon without more comparisons from reputable sources... Comparisons, data, graphs... Not words.